Download Digital Imaging Digital Imaging Digital Imaging Digital Radiography

9/8/2016
Digital Imaging
Digital Imaging
Purpose & Uses
‐detect lesions, disease, and conditions of the teeth and surrounding structures
‐to confirm or classify suspected disease
‐to provide information during dental procedures
‐to evaluate growth and development
‐to illustrate changes secondary to caries, perio disease, or trauma
‐to document the condition of a patient at a specific point in time
Fundamentals & Key terms
Sensor
Digitized
Pixel
CCD
Resolution
USE RECEPTOR
2 TYPES:
• Direct
• Indirect
*we have both
1
2
Digital Radiography
Digital Imaging
Advantages v/s
Disadvantages
2 Types of Digital Imaging
•
Direct (SENSOR)
•
Indirect this includes
Storage Phosphor (Scan‐ X)
QUESTION TO DISCUSS: IS IT LESS EXPOSURE?
CBCT: Cone Beam-Computed Tomography
Cone Beam Dental Imaging
3‐D
Cone‐beam CT imaging:




Rapid scan (less than 1.5 minutes)
lower dose than CT scan
superior to panoral radiograph (but inferior to CT)
dosage comparison‐ panoral 6‐20 mSv/CBCT 135 mSV; CT 314‐2000 mSv (*mSV measures radiation just as rem or mrem)
 Cost $$ machines average 100k‐250k (more cost for patient too)
 Have to be reviewed by radiographer
 Great for implants, pathology, trauma, surgery
https://www.youtube.com/watch?v=CKfOUhh7_‐M
1
9/8/2016
SAFETY & INFECTION CONTROL
Radiation Comparison Chart
Sources of Radiation
Amount of radiation
Radiation Comparison Chart
**Considering the average person is exposed to 200‐450 mrem radiation a year, the amount of radiation received during dental x‐rays is minimal
Daily exposure to natural radiation
0.8 mrem
Single intraoral x‐ray digital
0.325 mrem
Less than half of 1 day
Bitewings (4 films digital)
1.3 mrem
about 1.5 day Intraoral full‐mouth digital
6 mrem
about 7 days
2‐D pan
1.4‐2.4 mrem
about 2‐3 days
3‐D Cone Beam
8.7 mrem
about 11 days
Head CT
86 mrem
about 108 days
CT Full Body 1000 mrem
about 3 years
Flight from New York to LA
2‐5 mrem
about 3‐6 days
All up to you!
Using the Daylight loader
inf control.mp4
9
2